问题
填空题
有一种攻击是针对网络低层协议而不是针对某项特定的应用服务，这种攻击称为______。
答案
参考答案：非服务攻击
解析： 从网络高层协议角度划分，攻击方法可以分为服务攻击与非服务攻击。服务攻击是针对某种特定网络服务的攻击，如针对E-mail和Telnet等服务进行的攻击；非服务攻击是基于网络层等低层协议而进行的攻击，如源路由攻击和地址欺骗等。
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有一种攻击是针对网络低层协议而不是针对某项特定的应用服务，这种攻击称为______。
参考答案：非服务攻击
解析： 从网络高层协议角度划分，攻击方法可以分为服务攻击与非服务攻击。服务攻击是针对某种特定网络服务的攻击，如针对E-mail和Telnet等服务进行的攻击；非服务攻击是基于网络层等低层协议而进行的攻击，如源路由攻击和地址欺骗等。
| 先阅读短文，掌握其大意。然后从方框中所给的词中选出恰当的10个，并用其适当形式填空， 每个此限用一次。 | |
when he was three. His grandfather 2 in bed for many years. His mother worked so 3 that she is ill now. She will not 4 money for her family. The family is in 5 . Yang Liang can't go to school 6 other students. When the local government knew the things, they took 10, 000 yuan 7 the family. They let Yang Liang keep his 8 . Yang Liang needn't 9 any money for school. When the famous ping-pong player Deng Yaping knew this, she 10 to help him finish his study until he graduated from the university. |